Clyclone separator to be built in a casing or similar

ABSTRACT

A cyclone separator has in its outlet for the light fraction a vortex finder, the outwardly facing part of which is divided by a plurality of radially disposed partition walls joined by an elongate nave extending coaxially with the separation chamber of the separator. The nave protrudes outwardly from the outlet to constitute a distance member for a wall of a casing for the separator and also to define in conjunction with the casing wall and the end of the outlet an annular slot for radially deflecting the partial flows of the light fraction passing between the partition walls.



1. A cyclone separator for separating material including fiberssuspended in a liquid suspension into a light fraction containing thefibers and a heavy fraction containing rejects, said cyclone separatorcomprising: a generally conical separation chamber having at its narrowend an outlet for the heavy fraction of the material and at its wide endan outlet for the light fraction of the material; and a vortex findermounted in the outlet for the light fraction, said vortex finderincluding an elongate closed nave disposed coaxially with said chamber,and a plurality of partition walls joined along an edge to the nave andradially extending from said nave to a wall of the vortex findersurrounding said nave.
 2. The cyclone separator according to claim 1wherein said nave protrudes from the outer end of said outlet for thelight fraction.
 3. The cyclone separator according to claim 1 whereinsaid vortex finder defines a Venturi-shaped nozzle, said nave and saidpartition walls being disposed in the outwardly facing part of thenozzle.
 4. The cyclone separator according to claim 1 wherein saidpartition walls are flat walls, said edge of the partition walls beingparallel to the center axis of the nave.
 5. The cyclone separatoraccording to claim 1 and comprising a casing including a wall portiondisposed substantially parallel to the outer end of said outlet for thelight fraction spaced apart therefrom, and wherein a portion of saidnave protrudes from said outlet end into abutment with said wallportion, the protruding nave portion consisting a distance memberdefining about said nave portion an annular slot of predetermined widthbetween said casing wall portion and said outlet end, said slotdeflecting the light fraction in radial direction.